Abstract: The solubility of ethylene in cuprous aluminium tetrachloride-toluene solutions was measured. A thermodynamic model in which phase and complex equilibrium are considered simultaneously was presented. The simplified Scatchard-Hildebrand equation is employed for estimation of activity coefficents of each component. The corresponding computer program was compiled and conveniently used for the correlation of experimental solubility data. The comparison between calculated and experimental values of ethylene solubility gives good agreement.
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** China Textile University